Plant sweetpeas in a piece of c shaped guttering to avoid disturbing the roots and then just cut a c shape out of your ground and slide them in I would also stake and train as soon as possible to avoid stunting there growth.
Dig soil as early as possible to let the frost break it down even in annual flower beds.
Add blood fish and bone meal to you potting compost in December, this way the fertilizer shouldn’t burn roots when you pot up plants in the spring.
I like to line large metal plant pots with a bin liner so the pot doesn’t show signs of fertilizer/water damage so easily.
Raise all pots up of the ground to let air in also it stops ants nesting so I’ve been told.
I also use to use water retaining crystals to my hanging baskets but I now don’t bother as it pays to inspect the baskets on a regular basis to dead head so it always good to water at the same time with a watering can without a rose so you are watering the soil and not running water of the foliage.
I always sit my hanging baskets on buckets, water it until it runs out the wait 20 min and then repeat every other day on the middle days spray the foliage with a sprayer I use a hand pump sprayer.